Conjugated polyelectrolytes for organic light emitting transistors

Jung Hwa Seo; Namdas, Ebinazar B.; Gutacker, Andrea; Heeger, Alan J.; Bazan, Guillermo C.
July 2010
Applied Physics Letters;7/26/2010, Vol. 97 Issue 4, p043303
Academic Journal
We report on solution-processed light emitting field-effect transistors (LEFETs) that incorporate symmetric high work function (WF) source and drain metal electrodes. A key architectural design is the incorporation of a conjugated polyelectrolyte (CPE) electron injection layer atop the emissive layer. The device structure also comprises a hole-transporting layer underneath the emissive layer. Both holes and electrons are injected from stable, high WF metal though the CPE layer leading to electroluminescence near the electron-injecting electrode. With the benefits of the simplicity in device fabrication, the LEFETs incorporating CPEs are interesting structures for integrated organic optoelectronic devices.


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